Rotary-blowpipe apparatus.



W. C. BUCKNAM.

ROTARY BLOWPIPR APPARATUS.

APPLIUATION FILED JULY 20, 1912.

OO. u 1L O wm m. E c 7 RM am w .J.E dE BH a n P www ne ua uis HIL I W. C. BUCKNAM.

ROTARY BLOWPIPE APPARATUS.

APPLIGATION FILED JULY 29, 1912.

-UNITED stares PATENT OFFICE.

'WORTHY C. BUCKNAM, OF JERSEY CITY, JERSEY, ASSIGNOB T0 DAVIS- BOURNONVILLE COMPANY, OF NEW YORK, N. Y., .A CORPORATION OF NEW YORK.

ROTABY-BLOWPIPVE, APPARATUS.

Speication of Letters Patent.

Patented Jan. 7, 1913.

To all 'ir/wm, Ait may concern Be it known that I, VORTHY C. BUCK- NAM, a citizen of the United States, and a resident of Marion, Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Rotary-Blowpipe Apparatus, of which the following is a specification.

This invention relates to means for supporting and circularly moving the ]ets of Oxy-acetylene or Oxy-hydrogen blow plilpe apparatus, or torches as they are comme y called, and is designed more especially .for cutting, wherein, as is well knownua en tting jet of oxygen is assisted by a heat-ing )et or jets composed of a combustible mixture, for example oxygen and acetylene.

The object of the invention is to provide a simple and convenient apparatus whereby the jet-delivering means may be caused to describe circles of different sizes and of as the appended claims.

In the said drawings: Figure 1 is a sectional side view of the apparatus applied to an I-beam; Fig. 2 is a back view thereof, parts being in section and others broken away; Fig. 3 is a horizontal section; Fig. 4 is adetail longitudinal section taken through the forward part of a form of torch that may be employed; and Fig. 5 is a semi-diagrammatic viewV indicating the operation ofV the device. i

A horizontally-acting clamp, comprising suitably formed jaws 10, 11, is adapted to grasp opposite laiigesor edgesof `a beam or-bar or the ball or base of a rail. It is preferably applied to the top of the beam or the like, though this is not essential. The

clamp is shownas including a rod 12, to

which the jaw 11 is secured and along which the jaw 10 is slidable, being advanced by an internally threaded hand wheel 13 engaging threads on the rod. A suitable vertical member, liere shown as a flat bar 14, is supported by the jaw 11, and Lis preferably vertically adjustable through an opening therein, being provided at its upper end with a stop 15 to limit its downward movenient. The vertical member may be set at any height by a locking screw 16.

While the clamp is referred to as horizontally-acting rand the bar 14 is designated a vertical member, it will be understood that these are relative terms based on the assumption that the web ofthe beam or rail to be operated on is vertical, and that the device may be applied to the work in any position.

A carriage 17 is vertically adjustable on the bar 14, being provided with a. suitable slide 18 receiving the bar. This carriage is set at any suitable height on the bar by means of a locking screw 19. The said carriage supports an annular frame 20 at one side of the vertical member or bar, the said frame being preferably formed with a V- shaped ball raceway 21. A rotatable circular carrier 22 is supported by the said frame, and is preferably provided with a complementary raceway 23, balls 24 being interposed between the two. "The carrier is in effect rim-journaled 0n the carriage 17, and it is located at one side of the vertical member on which it is vertically adjustable, so that this member does not interfere with the torch or blow-pipe 44 in its circular movement.

The carrier 22 is preferably'in the form of a ring, and it is provided with parallel transverse guides 25 between which is a di ametrical opening through which the torch projects. A carriage or block 26 is slidable along these guides and is formed with a circular opening for the reception of the split collar or torch-holder 27, which may be tightened on the torch by means of a screw 28. The carriage 26 may be locked at any adjustment by a canif29 having a handle 30.

An annular gear 31 is formed on or secured to the carrier 22, and is meshed by a small pinion 32 on the end of a shaft 33 journaled in a bracket 34 secured to the slide 18. The illustrative device herein shown is to be hand driven, and accordingly the shaft 33 carries a crank handle 35. To avoid interference of the hand with the torch, the shaft 33 is preferably inclined away from the carrier 22, and the gear 31 is correspondingly beveled. Thus, suitable means are provided for rotating the carrier at uniform slow speed, which is essential for suceessful cutting.

The torch 50 is adjustable in its holder 27 toward and from the work, so that the jets may be disposed at the proper distance therefrom irrespective of the width of the llanges grasped by the clamp. To this end it is shown as provided with a cylindrical body or casing 45 which is slidable in the said holder. The torch has conduits for leading the diil'erent kinds of gases and jet orifices forl delivering theheating and cutting jets, indicated at 36, 37, substantially parallel to the axis of rotation of the carrier 22 and in a manner to impinge in spaced relation upon the work. While only one heating jet is shown, it will be understood that there may be more. The single heating jet shown proceeds aroundthe circle and is trailed by the cutting or oxygen jet. The

torch is shown as provided with three con-v duits, 38 for the oxygen for the cutting jet, 39 for the oxygen for the heating jet, and 40 for the acetylene or combustible gas for the heating jet. These conduits have suitable `valved connections to which are attached lexible'tubes leading from lthe sources of supply. The construction ot' the removable and replaceable nozzle or tip 41, having the heating and cutting jet passages 42, 43 need not be particularly described herein, as it forms the subject-matter of prior patents.

In operation, -the cla-mp is atlixed to the top or bottom of the beam, rail or other bar, with the vertical member 14 projecting downward or upward, as the case may be.

The carriage 17 is now adjusted to the proper height, either by moving it on the vertical member 14 or by moving the latter on the clamp. This adjustment is preferably secured, however, by sliding the carriage on the vertical member. Graduations on the said member serve to indicate when the proper height. has been reached. The vertical adjustment of the bar 14 is useful when it is necessary to raise the bar to avoid obstruct-ions. An index or pointer 44 carried by the clamp jaw 11 and terminating in the vertical plane of the axis of rotation of the carrier 22 enables the whole device to be set to a mark made on the top of the beam or rail indicating the point along the length of the beam where thc hole is to be cut. The group of jets is adjustable from the axis of rotation outward, so that circles ma be cut of any diameter within the range o the device,espeeially small circular openings. The distance of the cutting jet from the center of rotation, that is to say the radius of the hole to be made, is indica-ted by a scale formed on one or both of the guides 25. vThe torch is 65 inserted in the holder with its jet orifices at the proper distance from the web of the beam or rail, this adjustment being secured by merely moving the torch as a whole in or out. The line passing through the jet orifices is tangential to the circle to be cut, and the heating jet is in advance. The heating jet is turned on and lighted, after which the cutting jet is turned on. 'lhe carrier is now rotated at a slow uniform speed and the circular hole is quickly and easily cut.

While the preferred construction and mode of operation have been described in detail, it will be understood that numerous changes may be made and that the features of the invention or part of them may be embodied in other specifically ditlerent apparatus.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a device for'the circular cutting of beams, rails and other bars by means of gases, the combination of a supporting structure havingasuitable means for attachment to the bar, a circular carrier supported thereby and having. transverse holdin and guiding means, means for rotatin sai carrier, and s cutting means on sai carrier adjustab e relatively to the axis of rotation on said holding and guiding means.

2. In a device of the character described, the combination of a supporting structure having suitable means vfor attachment to a beam, rail or other bar, a frame supported thereby, a circular carrier rim-journaled on said frame, and a cutting torch passing through and adjustable across said carrier so as to cut circles of diii'erent diameters in t-he bar.

3. AIn a device of the character described, j the combination of suitable means to clamp on a beam, rail or other bar, a vertical member carried thereby, a carriage vertically adjustable on said member, a circular carrier rim-journaled on said carriage at I 4. In a device of the character described, l

the combination of transversely -acting means of attachment to a beam, rail or other bar, a vertical member sup orted thereby, a carriage vertically adjusta le on g said member, a rotary carrier supported by said carriage with its axis of rotation to one side of said vertical memberand at right angles to the perpendicular, and heating and cutting jets carried by said carrier.l

5. In a device of the character described, i

the combination of a supporting structure having suitable means for attachment to a beam, rail or other bar, a frame supported thereby, 'a carrier rim-journaled on said frame and bearing an annular gear, driving means engaging with said gear, and gas cutting means passing through and adjustable on said carrier relatively to the axis of rotation so as to cut circles of differentdiameters in the bar. A

6. The combination of a support, a rotary carrier rim-journaled on said support, and a blow-pipe passing through and adjustable across said carrler.

7 The combination of a supportin lr frame, a circular carrier rotatably mounted thereon and having a diametrical opening, a kcarriage adjustable along said opening, across the circular carrier, and a blow-pipe carried by said carriage.

8'. The combination of a support, an annular carrier rim-journaled thereon and having a transverse guide, means for rotat- WORTHY C. BUCKNAM.

` Witnesses:

J. F. BRANDENBURG, LUELLA F. Lri'rLE. 

